Support of copying lathes



y 14, 1953 o. VON ZELEWSKY 2,645,148

SUPPORT OF COPYING LATHES Filed April 18, 1950 i 2 Sheets-Sheet 1 Fig. 1

J TNVENTOR: Ottomar van ZC/h/Slffl ATTORNEBS Patented July 14, 1953SUPPORT OF COPYING LATHES Ottomar von Zelewsky, Neuhausen am Rheinfall,

Switzerland, assignor to Georg Fischer Aktiengesellschaft, Schafihausen,Switzerland, a company of Switzerland Application April 18, 1950, SerialNo. 156,536 In Switzerland November 30, 1949 4 Claims. 1

This invention relates to machine tools and refers more particularly tomeans adjusting and setting the supports of templates and prototypes ofcopying lathes which are provided with two template supports adjustablymounted in the machine frame and carrying pins or holders which engagethe template or prototype.

An object of the present invention is to provide an adjusting or settingdevice for template holders through the use of which the position of thetemplates can be easily and quickly adjusted.

Other objects of the present invention will become apparent in thecourse of the following specification.

The objects of the present invention may be realized through theprovision of an adjusting or setting device, the template holders ofwhich can be finely adjusted axially as well as in the direction of thetool. 2 The invention will appear more clearly from the followingdetailed description when taken in connection with the accompanyingdrawings showing, by way of example, a preferred embodiment of theinventive idea.

In the drawings:

Figure 1 is a diagrammatic front view of a lathe provided with templatesupports;

Figure 2 shows holders supporting a round template;

. Figure 3 is a longitudinal section along the line IIIIII of Figure 1;

Figure 4 is a longitudinal section along the line IVIV of Figure 1, andillustrates the spring engaging the holder in a position of preliminarytension; 7 Y V Figure 5 is similar to Figure 4, and shows a holder inthe position in which it engages a template;

Figure 6 is a section along the line VI-VI of Fig. 1 on a somewhatenlarged scale;

Figure 7 is a fragmentary side view illustrating the fine adjustment ofthe template holder in the direction of the tool;

Figure 8 is a section along the line VIII-VIII of Figure 5.

The copying lathe shown diagrammatically in Figure 1 of the drawingsincludes a frame I, a headstock 2 and a tailstock 3 with a work piece 4held between the headstock 2 and the tailstock 3.

Obviously any suitable means may be used for supporting the work piece4.

A carriage 5 is movable in a direction parallel to the central axis ofthe work piece 4 by any suitable means, not shown in the drawing. A toolcarrier 6 is mounted upon the carriage 5 and is movable thereon at anangle to the longitudinal direction of movement of the carriage. Theholder 6 carries a tool I. A follower 8 is carried by the member 6 andis connected with the tool I by an electrical or hydraulic copyingdevice which is not illustrated in the drawings, and is located withinthe casing 6. I The follower follows the outlines of a flat template ora round prototype 4B, and these movements of the template aretransmitted by said copying device to the tool I which reproduces theoutlines of the template or prototype upon the work piece 4.

The template or the prototype 48 is carried by two supports or uprights,namely, the left-hand upright 9 and the right-hand upright IIl (lookingin the direction of Figure 1).

The uprights 9 and I 0 may be moved longitudinally upon the lowerportion of the frame I, and may be held thereon by bolts I-I.

As illustrated in Figures 3 and 7, the upright 9 carries a verticalscale 26 and is provided with a vertical groove I2 which is T-shaped incrosssection. A casing I3 for the template holder I5 carries bolts I4which can slide in the T-shaped groove l2 and which carry nuts I la toclamp in place the casing I3. 7 r

The device is also provided with a vernier 49 shown in Figure 7.

The template holder I5 is firmly connected with a threaded rod I6 shownin Figure 3 and extending within the casing I3. A nut I8 is mounted uponthe threaded rod I6 and is connected with a hand wheel I9 locatedoutside of the casing I3. A guide screw I! is carried upon the front endof the casing I3 and projects into a longitudinal groove 5| provided inthe holder I5 so as to prevent the holder from turning.

As shown in Figure 7 the hand wheel I9 is integral with a sleeve I9acarrying a scale 20 upon the outer surface thereof.

A block 2| also projects within the groove I2 and may be held firmlyupon the upright 9 by means of a bolt 22. p

The casing I3 is integral with a ring or projection 23 which carries athreaded spindle 24.

A nut 25 is mounted upon the spindle 24 and is 4, 5, 6 and 8. Theupright It] is provided with a scale 21 indicated in Figure 6.Furthermore, the upright It] carries a T-shaped groove 28 which containsbolts 30a carried by a casing 29 so that the casing 29 can slide in thegroove 28. Nuts 30 are carried by the bolts 30a and are used to hold inplace the casing 29. As, shown in Figure 2, the device is provided witha vernier 50.

The casing 29 carries a template holder 3| which is provided with alongitudinal groove 52. A screw 32 is carried by the casing 29 andprojects into the groove 52 to prevent the turning of the holder 3|. Itis apparent, however, that the two holders I5 and 3| are movable axiallywithin their casings.

A portion of the holder 3| is hollow and contains a nut 34 which ismovable longitudinally upon a threaded rod 36. The nut 34 carries aprojection or pin 54 which extends into a longitudinal groove 55 formedin the holder 3|. The projection 54 limits the movements of the nut 34.

A coiled spring 33 is located within the holder 3| and presses withinone end against the bottom of the holder. The other end of the spring 33engages the nut 34. The threaded rod 36 is firmly connected with a handwheel 35 which is located outside of the casing 29.

The upright I is firmly connected with an ear or projection 31 carryinga threaded spindle 33. A support 4|) projects into the T-shaped groove28 and may be firmly attached to the upright ID by suitable bolts notshown in the drawings. The support 40 carries projections 39 which holdin place a nut 4| mounted upon the threaded spindle 38 and provided witha scale for adjusting purposes.

The casing 29 is provided with a longitudinal groove 44 (Fig. 1) whichis used for receiving an end 43 of the template-carrier 42. Then, thenuts 53 (Fig. 8) which are carried by the casing 29 can be set to engagethe projection 43 and to prevent the turning of the template carrier 42.The device may be so set that the surface of the template 45 which is tobe engaged by the follower 8 will be exactly parallel to the follower(Fi 6).

As shown in Figures 1 and 6, the template 45 is firmly held upon thecarrier 42 by means of a clamping plate 46 which presses the template 45against a surface of the carrier 42 and which is held in place by anumber of screws 41.

It is apparent that the flat template 45 may be replaced by a roundprototype 48, which is shown in Figure 2, and which is held in place byprojections l and 3| engaging the prototype along its axis of rotation.

The device is operated as follows:

Let it be assumed that a work piece 4 (Fig. 1) is to be produced uponthe copying lathe in conformity with a fiat template 45 or a prototype48 (Fig. 2).

A blank constituting the work piece to be produced is inserted betweenthe headstock 2 and the tailstock 3 and is firmly held thereon, as shownin Figure l. Thereupon the longitudinal carriage 5 and the transversecarriage 6 are shifted by hand or by any other suitable means until thetool 1 is brought into engagement with the right-hand end of the workpiece 4 (looking in the direction of Figure 1).

Thereupon, the two uprights 9 and ID are shifted into suitable positionsupon the frame I of the lathe and are attached to the frame by bolts Ifthe fiat template 45 is used, the template holder 42 is inserted betweenthe points of the projecting members I5 and 3|, whereupon the template45 is mounted upon the carrier 42 and is clamped thereon by the clampingplate 46 and the bolt 41.

In the event it is desired to use the cylindrical prototype 48 thelatter is set between the two uprights 9 and Ill upon the members |5 and3|, care being taken that the points of the members 5 and 3| engage theaxis of rotation of the prototype 48.

When the approximate axial or longitudinal position of the template 45or of the prototype 48 has been determined in the above-described mannerits approximate vertical position, measured in the direction toward thework piece 4 and in relation to the follower 8, must be determined inthe following manner:

The operator loosens the nuts Ma of the easing 3 as well as the nuts 22of the support 2|. The casing |3 which is connected with the support 2|is shifted manually upon the groove l2 until it has assumed a positionwhich may be accepted as approximately correct. Thereupon, the nut 22 isscrewed on firmly while the nuts |4a are turned lightly. The operatorthen turns the set screw 25 which shifts the rod 24 mounted thereon andconnected with the casing 3 in relation to the support 2|. The fineposition of the casing L3 is determined by means of the Vernier 49 andthe scale 26. Thereupon, the nuts I 4a are screwed on tightly.

It is apparent that a similar procedure is repeated at the other uprightl0 and the parts carried thereby.

Should it be determined during the turning of the first work piece thatfurther corrections are necessary, then such corrections can be made byloosening the nuts Ma and turning the member 25 until the desiredposition is attained. Thereupon, the nuts |4a are screwed on tightly.

The fine axial adjustment of the template or the prototype is attainedby turning the wheel l9 carried upon the upright 9 (Fig. '7). The holder3| carried by the upright I0 is resiliently mounted, as indicated inFigures 4 and 5.

Should the operator desire to shift the template or prototype to theleft (looking in the direction of Figure 1) then the wheel I9 is turnedcounter-clockwise to an amount which can be read upon the scale 20 (Fig.7). Then the user turns the wheel 35, located opposite the wheel I9,clockwise until the projection 54 strikes against the left-hand end wallof the groove 55 (looking in the direction of Figure 5).

Should the operator desire to shift the template or prototype to theright (looking in the direction of Figure 1) then he turns the wheel 35counter-clockwise for a few rotations. The holder 3| remains, however,under the action of the spring 33. Then, the operator turns clockwisethe Wheel l9 until a desired adjustment is attained by an examination ofthe scale 20.

Finally, the Wheel 35 is again turned clockwise until the pin 54 strikesthe left end of the groove 55 (looking in the direction of Figure 5).

It is apparent that the described resilient support in one of the twotemplate holders makes it possible to set and to horizontally adjust avery long template in a simple and most effective manner, and withoutemploying more than a single operator.

It is further apparent that the example illustrated above has been givensolely by way of illustration and not by way of limitation, and that itis subject to various modifications and variations without departingfrom the scope or intent of the present invention. All such variationsand modifications are to be'included within the scopev of the presentinvention.

What is claimed is:

1. In machine tools, having an upright, a holder upon said upright andhaving a template-engaging tip, a sleeve enclosing said holder andcarried by said upright, the holder being shiftable within said sleeve,a threaded rod firmly connected with the holder and extending withinsaid sleeve, a nut mounted upon said rod, a wheel firmly connected withsaid nut and located outside of said sleeve, 2. scale upon said sleeveadjacent said wheel for the fine axial adjustment of the holder, andmeans connected with said sleeve for the fine transverse adjustment ofthe holder.

2. In machine tools having an upright, a holder upon said upright andhaving a template-engaging tip, means carried by said upright andconnected with the holder for the fine transverse adjustment of theholder, resilient means supporting said holder in the direction of itsaxis, and means connected with said holder for immovably holding saidholder upon completion of the transverse adjustment movement.

3. In machine tools having an upright, a holder upon said upright andhaving a template-engaging tip, a sleeve enclosing said holder andcarried by said upright, the holder being shiftable within said sleeveand being partly hollow, a wheel lo- 6 cated outside of said sleeve, athreaded rod firmly connected with said wheel and extending within saidsleeve and the holder, a nut mounted upon said rod and having aprojection extending into an axial recess formed in the holder, saidprojection being movable within said recess, a spring between the bottomof the holder and said nut, and means connected with said sleeve for thefine transverse adjustment of the last-mentioned holder.

4. In machine tools having an upright, a holder upon said upright andhaving a template-engaging tip, means carried by said upright andconnected with the holder for the fine axial adjustment ofthe holder,and a set screw connected with the last-mentioned means for the finetransverse adjustment of the holder, whereby the template surface to becopied may be set parallel to a copying device.

- OTTOMAR VON ZELEWSKY.

References Cited in the'file of this patent UNITED STATES PATENTS

